package com.h2cloud.clone.test.test2;

/**
 * @author: wulongkai
 * @create: 2022-09-26 16:32
 **/
class Father {
    String name;

    public Father(String name) {
        this.name = name;
    }

    @Override
    public String toString() {
        return "Father{" +
                "name='" + name + '\'' +
                '}';
    }
}

class Son implements Cloneable {
    int age;
    String name;
    Father father;

    public Son(String name, int age) {
        this.age = age;
        this.name = name;
    }

    public Son(String name, int age, Father father) {
        this.age = age;
        this.name = name;
        this.father = father;
    }

    @Override
    public String toString() {
        return "Son{" +
                "age=" + age +
                ", name='" + name + '\'' +
                ", father=" + father +
                '}';
    }

    @Override
    protected Son clone() throws CloneNotSupportedException {
        return (Son) super.clone();
    }
}

public class test2 {
    public static void main(String[] args) throws CloneNotSupportedException {
        Father f = new Father("bigFather");
        Son s1 = new Son("son1", 13);
        s1.father = f;
        Son s2 = s1.clone();

        System.out.println(s1);
        System.out.println(s2);
        System.out.println("s1==s2:" + (s1 == s2));//不相等
        System.out.println("s1.name==s2.name:" + (s1.name == s2.name));//相等
        System.out.println();

        //但是他们的Father father 和String name的引用一样
        s1.age = 12;
        s1.father.name = "smallFather";//s1.father引用未变
        s1.name = "son222";//类似 s1.name=new String("son222") 引用发生变化
        System.out.println("s1.Father==s2.Father:" + (s1.father == s2.father));//相等
        System.out.println("s1.name==s2.name:" + (s1.name == s2.name));//不相等
        System.out.println(s1);
        System.out.println(s2);
    }
}
